It is asserted by the defendants that this was a medical fact "beyond the ken of laymen." Reference is made to Nation v. Gueffroy, 172 Or. 673, 142 P.2d 688, 144 P.2d 296, in which case there was a total absence of expert testimony as to the standard of care to be employed by a physician in treating the plaintiff's injury and a directed verdict for the defendant was sustained. The decision applied the established rule in this class of cases.
This is the same rule which is applied in other cases which frequently involve technical, scientific issues such as medical malpractice cases. See, e.g., Getchell v. Mansfield, 260 Or. 174, 489 P.2d 953 (1971); Nation v. Gueffroy, 172 Or. 673, 142 P.2d 688, 144 P.2d 296 (1943); Annot., 40 ALR3d 515 (1971); Annot., 81 ALR2d 597 (1962)."
This is the same rule which is applied in other cases which frequently involve technical, scientific issues such as medical malpractice cases. See, e.g., Getchell v. Mansfield, 260 Or. 174, 489 P.2d 953 (1971); Nation v. Gueffroy, 172 Or. 673, 142 P.2d 688, 144 P.2d 296 (1943); Annot., 40 ALR3d 515 (1971); Annot., 81 ALR2d 597 (1962). In this case, the jury had the benefit of extensive explanations and demonstrations of the saw and its components by plaintiff, who was an experienced woodworker.